White wood and forestry residues have to be treated by means of a
crushing and drying process at an end-use facility.
Particles have to be very small to fulfil the requirements of rapid
heating and to achieve high liquid yields. Moreover, unless a naturally
dry material is available, drying is usually essential as all the
feed water is included in the liquid product (low grade process heat
can usually be employed, for example flue gases from by-product gas
or char combustion).
Crusher and feedstock receiving
Flue gas dryer
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